listen, i bought a ds and then like a month later the ds lite came out. what really made me mad was that the ds lite cost the same amount of money that the ds used to cost. So if i had waited about one month i would have had the much better ds lite( well not that much better, but still they are the same price!)
Anyways
Yes, the ds and ds lite play game boy games. The ds lite is lighter in weight than the ds, you can adjust the light on the screen to avoid glares, it is more portable, and it has a thicker and easier to hold stylus. But the best thing is THEY'RE THE SAME PRICE! So I'd definately buy the ds lite over the ds.